From Stansted Airport train to Tottenham Hale Underground Station, Tube to London Euston, then train to Watford Junction. 1hrs 08min £35. From London Stansted bus to Liverpool Street, line 205 bus to London Euston, then train to Watford Junction. 1hrs 55min £24. From Stansted Airport, Coach Station (Stansted Aprt) bus to Harlow Town Centre, Bus Station (Harlow Bus Stn) then line 724 bus to Watford, Town Hall. 3hrs 29min £15. From London Stansted Airport (STN) taxi to Watford. 49min £200. From London Stansted Airport (STN) drive to Watford. 49min £10.